Assuming that former system (before requiring new fan) was acceptable,
review new TAB documents showing same airflow and pressure conditions as e
xisted in prior system. This could be all that's nece
ssary but it depends on factors not easily surmised in a simply DCHAS post.
You may want to perform your own representative field measurements/v
erifications to ensure new system components have not affected speed of res
ponse of VAV dampers, etc. Nor is a representative full ASHRAE 1
10 test or more ever a bad exercise in my opinion.

Hello--Does anyone
have any thoughts or policies for test requirements for a systemof VAV
fume hoods after a fan replacement? Do you have a specific protocolor
is full ASHRAE 110 testing required or recommended? As installed? Asuse
d? Any thoughts or comments would be helpful.Thanks,Marjorie Markop
oulos

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